使用批量填充复合材料和高强度固化,当光尖位置受到损害时
David K Langford1, Martha H Wells2, C Volk Vinall3
1Assistant Professor of Pediatric Dentistry, University of Florida, Gainesville, Fla., USA.
Pediatric dentistry
|August 10, 2024
概括
受损的光尖位置减少了复合材料的固化. 大量填充复合材料的固化深度比传统复合材料更好,特别是使用高强度固化灯,但仍建议增加2.5毫米以下.
科学领域:
- 牙科材料科学 牙科材料科学
- 聚合物化学 聚合物化学
- 生物材料工程 生物材料工程
背景情况:
- 在牙复合材料固化过程中,不适当的光尖位置可能会损害恢复完整性.
- 散装复合材料在放置效率方面具有潜在的优势,但需要适当的固化.
- 高强度固化灯旨在提高聚合的深度和速度.
研究的目的:
- 评估散装复合材料和高强度固化是否可以减轻因灯尖位置不佳而降低的性能.
- 为了比较常规与散装复合材料在各种光尖条件下的固化效率.
- 评估高功率固化设置对复合材料性能的影响.
主要方法:
- 带有2.5毫米腔的塑料盘被常规或散装复合材料填充.
- 在正常和高功率设置下使用高强度光进行固,光尖距离和角度各不相同.
- 维克斯硬度测量了顶部和底部表面,以确定底部到顶部的硬度比.
主要成果:
- 所有顶部表面的硬度都高于底部表面.
- 固化性能 (底部至顶部硬度比) 受到复合材料类型,光尖位置和固化方案的显著影响.
- 与传统复合材料相比,散装复合材料表现出明显更高的底部到顶部硬度比.
- 高功率固化增强了散装复合材料的性能,但不是传统的复合材料.
结论:
- 增加的光尖距离和角度对复合材料固化深度有负面影响.
- 与传统复合材料相比,散装复合材料提供了优越的底部固化性能,无论光尖的位置如何.
- 高功率固化只有利于散装复合材料,但整体较低的底部到顶部比率需要在2.5毫米以下的深度对两种材料进行增量固化.
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